Temperature monitor using DHT22 + Grafana + InfluxDB (and a PI) – Part 3

In Part 1 and 2 we made it possible to read out the DHT22 sensor and save the data in an InfluxDB database. But this is not so useful if you can’t visualise the data. In this part we will install Grafana on the RPi and visualise the data in the browser.

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Temperature monitor using DHT22 + Grafana + InfluxDB (and a PI) – Part 2

In this part we will first install InfluxDB and use a simple cronjob to save the data in InfluxDB.

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Temperature monitor using DHT22 + Grafana + InfluxDB (and a PI) – Part 1

This projected started about 3 years ago as an Arduino project with a Raspberry PI pulling data from a DHT22 sensor and saving it in a csv-file and evolved over time to a DHT22 connected to a Raspberry PI writing data to an InfluxDB and visualising it with Grafana, both running on the RPi. To boost the cool factor, I also added a monochrome LCD display providing the current temperature, but in this part I will only cover the DHT22 Sensor together with Grafana and InfluxDB.

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Installing .net 3.5 on an offline Windows 2016 Server

So, installing .net 3.5 on a window server is not really that hard and normally you just need to run the command Add-WindowsFeature NET-Framework-Core -Source d:\sources\sxs, but recently I had a few machines where this simply failed with error code 0x800f0922 or other vague error code. Looking up these errors provided me with more than enough results in DuckDuckGo, but unfortunately none of them provided a solutions. In a few cases I even ended up with reinstalling the OS. And that was also the only lead I had. Clean installed machines didn’t had this issue, but machines that already received updates had the issue. Hmm…

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